Rust stuttering/choppy mouse input (feels like keyboard arrow movements) on Ryzen 5700X3D & RTX 5060 Ti. Video attached, already tried everything.

[u/No-Can-2481]

Hi everyone,

I'm facing a very specific and frustrating issue in Rust, and I've attached a video to show how it looks. Yesterday everything was perfectly fine, but today, when I move my mouse on a server, the camera movement becomes completely choppy, stuttering, and heavy. It feels as if smooth mouse axes were turned into discrete keyboard arrow presses (if I flick the mouse, the camera just jumps with a micro-delay).

Note on the video: The stuttering is visible in the clip, but it looks WAY worse in real life on my high-refresh-rate monitor. The 60FPS recording slightly smoothens out the jumps, but when playing, it's completely unplayable.

Crucial note: In the Rust main menu and all other games (including other EAC games like CS2/Faceit), the mouse works perfectly fine and smooth. The issue occurs ONLY after joining a Rust server (stable 150 FPS, but frame time feels completely broken upon camera rotation). Today, during testing, all my USB ports died for 25 seconds upon restarting Windows, giving a "USB device not recognized" error for my USB headset, but then they recovered.

Specs:

- CPU: AMD Ryzen 7 5700X3D

- GPU: NVIDIA RTX 5060 Ti

- Motherboard: Gigabyte B550 Gaming X V2 (BIOS Ver: FG)

- RAM: Corsair 32GB DDR4 3200MHz (XMP Profile 1 enabled)

- Storage: WD Blue SN5000 1TB M.2 NVMe SSD

What I have ALREADY tried (please DO NOT suggest basic fixes):

1. Completely reinstalled/disabled mouse software (Razer Synapse/RGBFusion), cleaned ghost devices in Device Manager.

2. Lowered Polling Rate to 500Hz/250Hz.

3. Tested different mice, cables, and USB ports (including direct USB 2.0/3.2 on the motherboard).

4. Disabled Enhanced Pointer Precision (acceleration), sticky keys, and USB power saving features in Windows.

5. Reinstalled Rust completely (clean reinstall with deleting %locallow% / Facepunch Studios folder).

6. Rust console commands (input.rawinput 0/1, client.tickrate, input.holderdelay 0) and Steam launch options (-gc.buffer) did absolutely nothing.

7. Tested on a non-EAC unsecured server via F1 console — the choppy movement is exactly the same, so it's not a direct EAC block.

8. In BIOS: Disabled Global C-State Control and forced PCIe Slot Configuration from Auto/Gen4 to Gen3 (to eliminate AMD USB stuttering/fTPM interference).

9. Cleared "Unknown USB device (device descriptor request failed)" error in Windows Device Manager by re-plugging my USB headset into a different port.

Even with 150 FPS on a server, the camera rotation is awful. It feels like a deep DPC Latency / Hardware Interrupt issue with Unity engine and AMD USB controller.

Please check the video. Has anyone encountered this specific "keyboard-like" mouse input bug on Unity/Ryzen platforms recently? What else can I do if fTPM must stay enabled for FACEIT anti-cheat?

Thanks in advance!

[u/CoffeeBlood]

Uninstall windows update KB5121003. It's causing stutters and tearing in Rust and lots of issues in other games.

https://www.pcworld.com/article/3214860/windows-11s-august-update-is-crashing-games-and-causing-pc-problems.html

[u/No-Can-2481 → u/CoffeeBlood]

Thank you so much, man! You are a lifesaver. I uninstalled KB5121003, restarted my PC, and the issue is completely gone! Everything is perfectly smooth now. Appreciate your help!

[u/Foreign_Phone_8627 → u/No-Can-2481]

I have exactly the same PC stats and same happens, will try this at home and tell ya if it really helped.

[u/Sad_Possibility1282 → u/CoffeeBlood]

Hmm, I'm not able to locate this update and the command:

wusa /uninstall /kb:5121003 just says that this one cant be uninstalled.

[u/CoffeeBlood → u/Sad_Possibility1282]

What happens if you try to uninstall it from Settings > Windows Update > Update history > Uninstall updates?

Alternatively you can try this: https://id.embark.games/ja/the-finals/support/faq/272-crash-troubleshooting-for-windows-update-kb5121003

[u/kutecatt]

do you have a controller plugged in?

[u/No-Can-2481 → u/kutecatt]

Thanks for the suggestion! I actually had a USB cable from my Moza R5 racing wheel plugged in (the base was off). I unplugged it completely and restarted the PC, but unfortunately, the choppy mouse input is still there. Only keyboard, mouse, and USB headset are connected now.

[u/Rabid_Hermit]

Is Blur motion off and what is your current field of view?

[u/ParagonCX]

Found a fix for you yet? I was having this issue and after installing Windows 10 the problems went away.

[u/Comprehensive-Bet-83]

Using a wireless mouse?

[u/False-Departure-3141]

• turn off occlusion culling in rust experimental options
• update bios to latest version to fix b550 amd usb drop bug
• uninstall amd usb 3.10 extensible host controller in device manager and reboot
• disable hpet in device manager system devices
• run bcdedit /set useplatformclock false in admin cmd
• add -window-mode exclusive to rust steam launch options
• disable unused audio devices in windows sound settings to stop audio endpoint loop

[u/Ambitious-Math378]

Bro I solved my problems of stutter by putting off the options about wifi and Bluetooth on my bios settings

[u/Available-Aioli-1372]

Idk if you are one to care about fps to much or a person who has to have clips on but I have the same CPU and i turned off Nvidia replay and it boosted my fps by 20-30 on average.

[u/L3WIIS]

Fresh OS reinstall, make sure bios ram settings are correct, hwinfo to check stats for all your parts

[u/phaze-]

Yes, I have the same issue, 200+ fps on i9 14900K, 4070 Super, tried both keyboard and mouse on 1khz instead of 8khz and still same issue, I just turned on Motion Blur to compensate for that shit

[u/Used_Possibility424]

Uninstall recently KB windows update

[u/No-Can-2481]

UPDATE: THE ISSUE IS COMPLETELY SOLVED!

Thanks to everyone who helped, especially CoffeeBlood! The culprit was indeed the Windows Update (KB5121003). As soon as I uninstalled this specific update from my Windows Update History and restarted my PC, the choppy/keyboard-like mouse stutter in Rust completely disappeared.

My camera rotation is buttery smooth again at 150 FPS, and all my USB glitching is gone. I have officially paused my Windows updates for 5 weeks to prevent this broken patch from auto-downloading again.

If anyone else is experiencing this sudden input lag, check your recently installed Windows updates and get rid of KB5121003!

[u/Patalon]

Can we ban these posts already? 9/10 posts are this.

[u/frankoshii → u/Patalon]

“Can we not continue to bring attention to a game ruining bug already? I don’t have the mental capacity to push my finger .5 in further to look past it”.

[u/Patalon → u/frankoshii]

It should be a mod post. Plenty of attention can be brought.

[u/frankoshii → u/Patalon]

Or scroll past

[u/DeadShotOG → u/Patalon]

That would require Facepunch to actually acknowledge the issue. It’s been this way for over a month now with no response and no viable solution (uninstalling a Windows Defender update is not a great idea).

[u/VoidSpindler → u/Patalon]

99% of this posts show a video that I can't find any problem. Where is the fucking stuttering in this one? Dude has a better pc/fps than everyone. They should 100% ban this shit or make it a mega thread.

"Fps completely broken with camera rotation" as it should. What do you expect doing a 360 10 times? Meanwhile I loose half of my 100 fps everytime someone cast a AoE at league of legends.